50
Lesson 50 of 84 · U.S. Regions
Regional Transportation
Erosion — wind, water, and ice wearing away rock — shapes landscapes. The Grand Canyon was carved by the Colorado River over millions of years.
Key Facts
1
Climate differs from weather.
2
Natural resources are limited.
3
Geography affects how people live.
Check Your Understanding
Question 1
1 of 2What does a physical map show?